Thousands of protesters took to the streets in Europe on Saturday to denounce the suspected double suicide attacks that killed at least 95 people during a peace rally in Ankara.

In Paris police estimate that around one thousand people, a majority of whom were Kurdish, came out on Saturday afternoon to the city's Place de la Republique to condemn the attacks.

The demonstration was called for by the Kurdish Democratic Council in France, which said in a statement that it "strongly condemns this cowardly and disgusting attack".

In Strasbourg in northeastern France, another 400 people demonstrated according to police, and several hundred came out in solidarity in the southern city of Marseille, with some holding signs reading "Murderer Erdogan".

Organizers called for another demonstration to take place Sunday afternoon in Paris, to call for a "stop to the dirty war and state terror in Turkey and Kurdistan".

Zurich saw 1,000 people come out to the centre of the city in what police called a peaceful demonstration.

Some demonstrators in Zurich held signs reading "Stop state terror in Turkey".

In Istanbul, an estimated 10,000 people marched down the city's main central avenue to protest the attacks.

Turkish Prime Minister Ahmet Davutoglu told reporters there was "very strong signs" that the attacks were carried out by suicide bombers.

With the country shattered by the deadliest attack in the history of modern Turkey, Davutoglu declared three days of national mourning.